Tool-holder.



3.1. SAUM. TOOL HOLDER.

APPLICATION FILED MAYZY, 1915.

'1, 168,428. Patented Jan. 18', 1916.

"t me;

' I ROBERT J. SAUM, or SPRINGFIELD, OHIOfASSIGNOB TO ,THE WESTERNHTOOL &MANUFACTURINGCOMPANYyOr srnmerrnrn, oI-I Io,,AcoRroRA'rro1v oFoHIo.

moon-HOLDER. i

3' To all whom it may concern: v

citizen of the United States, residing at I Springfield, in the countyof Clark and State of Ohio, have invented certain new and usefulImprovements in Tool-Holders,

- of which the following is a specification.

This invention relates to improvements in tool holders for lathes. I

' p The object of my invention is to provide a clamping device forsecuring the tool in my improvements.

' the holder of such character as to be readily reversed in its bearingsto compensate for wear. p v

' A further object of the invention is to provide a'construction bywhich the tool may be more firmly supported than in previousconstructions.

In the accompanymg draw1ngs:-F1gure 1 is a top plan view of a deviceembodying F ig. 2 is a side elevation of the same. Fig.3 is a section onthe line 3-3 of Fig. 1. Fig. his a similar section showing the clampingcam in reversed position. Fig. 5 1s a slmilar section WIth the tool andits clamping device removed.

Like parts are represented by slmilar In the said drawings, 1 representsthe head of the holder and 2 the shank thereof,

' the same being provided with an upwardly extending channel 3 for thereception of the tool. The head of the holder is also provided with aforwardly extending tool support 4, of a width substantially the sameversely across the head 1 and communicate ing with the upper portion ofthe channel 3 is a'bore 5,one end of which is reduced as indicated atv5*the'reduced portion of this bore extending from one side of thechannel 3, to the adjacent outer side of the head 1. 6 represents aremovable bushing which is inserted in'enlarged portion of the bore,between the opposite side of the channel 3 .1 and the other side of thehead 1, the inner :diameter of this bushing being the same as W i I,specificationofLetters Pateiit. f v

Application filed May27, 1915." Serial No. 30,752. I

. f 7 that of the bore. Located inthe reduced 3 Be it known that I,RoBER'r J. SAUM, a

bore and bushinghis a shaft 7 having a centrally arranged. cam 8, lyingcoincident with the channel 3, one end of the shaft 7 being providedwith anextension 9 for the reception ofa wrench or other tool for thepurpose of turning the shaft to cause the P cam toengage the tool 10 to.clampthe same as to interfere with the proper operation of V theclamping device, the camshaft 7 and its cam, aswell as the bushing 6 maybe removed, and the shaft and its cam reversed to the position shown'inFig. 4;, so that that end of the shaft to which thepower is applied willbe located in the bushing 6, which,

reversal will bring the unworn surface of the cam into made to obviateanydifiiculty encountered by'reason of the projection 9 interfering withthe work being performed by the tool position to engage and .clamp thetool. 'Further, this reversal may be 'onthe'particular side on which itmay be located. characters of reference in the several views. v

"Having thus described my invention, I claim J I I 1. A tool holderhaving tool'receiving channel and a bore substantially at right anglesto said channel communicating with same, said bore being of differentdimensions, a bushing located in the larger end of said bore having an,interior diameter corresponding to the diameter ofthe small end of saidbore; a camshaft having the opposite ends thereof of substantially the 3[same diameter,;and a cam portion intermediate the ends, said cam shafthaving one end journaled in the small end of said bore and the other insaid bushing, said cam I portion on said shaft being capable of beinginsertedthroughthe large 'boreand lying substantially co-incident withsaid tool re- 7 ceiving channel, substantially as specified. I

' 2. Atool j holder having a tool receiving channel and abore arrangedat right-angles to said channel and communicating with the same, saidbore being of different dimen-

